Rockwool Slabs (IP 30/75). 12 in wide X 3 ft long X 3 in tallRockwool Slabs by Grodan - IP 30/7512" wide X 3' long X 3" tall. WrappedSlabs are used to grow a variety of crops. Tomatoes, peppers, other plants can be easily grown by planting first into a smaller cube then transferring it onto the larger slab. Holes are cut in the top of the slab, the same dimensions of the cube. Some growers will simply cut an x in the plastic top, fold the si... — Ships from Portland, Oregon USA....more info.

Rockwool Slabs (IP 20/75). 8 in wide X 3 ft long X 3 in tallRockwool Slabs by Grodan - IP 20/758" wide X 3' long X 3" tall. WrappedSlabs are used to grow a variety of crops. Tomatoes, peppers, other plants can be easily grown by planting first into a smaller cube then transferring it onto the larger slab. Holes are cut in the top of the slab, the same dimensions of the cube. Some growers will simply cut an x in the plastic top, fold the sid... — Ships from Portland, Oregon USA....more info.

Rockwool Slabs (15/100 A2W). 6 in wide X 3 ft long X 4 in tallRockwool Slabs by Grodan6" wide X 3' long X 4" tall. Wrapped.Plant small cubes on slabs.Slabs are used to grow a variety of crops. Tomatoes, peppers, other plants can be easily grown by planting first into a smaller cube then transferring it onto the larger slab. Holes are cut in the top of the slab, the same dimensions of the cube. Some growers will simply cut an x in the plastic ... — Ships from Portland, Oregon USA....more info.

Rockwool Slabs (IP 15/75). 6 in wide X 3 ft long X 3 in tallRockwool Slabs by Grodan - IP 15/756" wide X 3' long X 3" tall. Wrapped.Plant small cubes on slabs.Slabs are used to grow a variety of crops. Tomatoes, peppers, other plants can be easily grown by planting first into a smaller cube then transferring it onto the larger slab. Holes are cut in the top of the slab, the same dimensions of the cube. Some growers will simply cut an x in t... — Ships from Portland, Oregon USA....more info.

Rockwool Grow Cubes (DM 32G 40 /40). 6 in X 6 in X 5.5 inRockwool Grow Cubes by Grodan - DM 32G 40 /40 HUGO.6" X 6" X 5.5" Wrapped. Sold individuallyExtra large cubes for growing full grown plants.Plastic wrapped rockwool cubes guide roots downward. You can set them on top of other rockwool cubes / slabs or use other growing media like Silica Stones for the roots to grow into. Rockwool cubes with holes in the top are designed to have the... — Ships from Portland, Oregon USA....more info.

Rockwool Grow Cubes (DU 4G) 8 Cube Sheet. 3 in X 3 in X 2.5 inRockwool Grow Cubes by Grodan - DU 4G3" X 3" X 2.5" Wrapped. No hole. Sheet of 8 cubesPlastic wrapped rockwool cubes guide roots downward. You can set them on top of other rockwool cubes / slabs into which the roots can grow. Rockwool cubes with holes in the top are designed to have the smaller rockwool cubes fit into them. This would be after you see roots start to emerge from the... — Ships from Portland, Oregon USA....more info.

Rockwool Grow Cubes (DM 6.5) 6 Cube Sheet. 4 in X 4 in X 2.5 inRockwool Grow Cubes by Grodan - DM 6.54" X 4" X 2.5" Wrapped cube with hole. Sheet of 6 cubes.Plastic wrapped rockwool cubes guide roots downward. You can set them on top of other rockwool cubes / slabs into which the roots can grow. Rockwool cubes with holes in top are designed to have the smaller rockwool cubes fit into them. This would be after you see roots start to emerge from... — Ships from Portland, Oregon USA....more info.

Rockwool Grow Cubes (DM 4G 42/40) 8 Cube Sheet. 3 in X 3 in X 2.5 inRockwool Grow Cubes by Grodan - DM 4G 42/403" X 3" X 2.5" Wrapped. Sheet of 8 cubes. Cube with hole.Plastic wrapped rockwool cubes guide roots downward. You can set them on top of other rockwool cubes / slabs into which the roots can grow. Rockwool cubes with holes in the top are designed to have the smaller rockwool cubes fit into them. This would be after you see roots start to e... — Ships from Portland, Oregon USA....more info.

Rockwool Grow Cubes. Medium BagRockwool Grow Cubes by Grodan. Medium Bag.Small air pockets form spaces for roots to take in oxygen but still be moist. Good stuff.Cubes are approximately 3/8" by 3/8" square.... — Ships from Portland, Oregon USA....more info.

Rockwool Grow Cubes. Large BagRockwool Grow Cubes by Grodan. Large Bag.Small air pockets form spaces for roots to take in oxygen but still be moist. Good stuff.Large bag will fill 23 one-gallon containers. Cubes are approximately 3/8" by 3/8" square.... — Ships from Portland, Oregon USA....more info.

Medium Water Absorbent Granulate, 13.4 Cubic FeetGrodan Medium Water Absorbent Granulate, 13.4 Cubic Feet (RWXA20)Granulated rockwool can be used alone or as an amendment to organic based mixes. For example, the addition of water absorbant granulate to peat mixes at 25-50% volume, increases water holding capacity and aeration, improving plant growth and shelf life. The water repellent granulates are superior substitutes for aerat... — Ships separately from Vancouver, WA and/or HF: North & South California, Colorado, Pennsylvania, Texas, Florida USA....more info.

Medium Water Repellent Granulate, 45 lbs.Grodan Medium Water Repellent Granulate, 45 lbs. (RWREP20)Granulated rockwool can be used alone or as an amendment to organic based mixes. For example, the addition of water absorbant granulate to peat mixes at 25-50% volume, increases water holding capacity and aeration, improving plant growth and shelf life. The water repellent granulates are superior substitutes for aerators suc... — Ships separately from Vancouver, WA and/or HF: North & South California, Colorado, Pennsylvania, Texas, Florida USA....more info.

MM50/40 6/15 Block, 2"x2"x1.5", 60 strips of 24Grodan Block 2x2x1.5" (RWMM5040)Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant sta... — Ships separately from Vancouver, WA and/or HF: North & South California, Colorado, Pennsylvania, Texas, Florida USA....more info.

MM 40/40 6/15 Block, 1.5"x1.5"x1.5", 15 per strip, 3 strips per packGrodan Block 1.5x1.5x1.5 (RWMM4040)Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant ... — Ships separately from Vancouver, WA and/or HF: North & South California, Colorado, Pennsylvania, Texas, Florida USA....more info.

Hugo Blk 6x6x5.8 w/hole 40/40 (case of 48)Grodan Hugo Blk 6x6x5.8 w/hole 40/40 (RWHUGO)Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the differ... — Ships separately from Vancouver, WA and/or HF: North & South California, Colorado, Pennsylvania, Texas, Florida USA....more info.

Delta 4 Block, 3x3x2.5", no hole, case of 384Grodan Block 3x3x2.5 no hole (RWDU4G)Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plan... — Ships separately from Vancouver, WA and/or HF: North & South California, Colorado, Pennsylvania, Texas, Florida USA....more info.